Bug 21085

The msgget(3) began to fail strangely with errno = ENOSPC
even at the system boot. The problem is with msqids struct
initialization - msg_perm.mode field was tested at sys/kern/sysv_msg.c:442,
but has not been previously initialized properly
at sys/kern/sysv_msg.c:190.

Fix: Beware, all other sysv_* files should be inspected
closely, because malloc() for the structures
has been introduced on May, 1st. 2000.
How-To-Repeat: 
Try to run the following program, however
we were unable to reproduce the bug on some other machines.
The program failed with ENOSPC even with empty msg queue table.

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>


int
main()
{ 
        int msgq;
        msgq = msgget(IPC_PRIVATE,IPC_CREAT);
        printf("Result: %d\n", msgq);
        if (msgq == -1)
                perror("msgget");
        return 0;
}